How to continually Instance.new() a camera to a specific block, every .5 seconds?

He's some example code that I'm working on. However, please don't only pay attention to the code. If you have your own idea, please share it.

-- Either put this in a seat, if it can only be used in a seat, or do your own thing with it.

function waitForChild(parent, childName)
    while true do
        local child = parent:findFirstChild(childName)
        if child then
            return child
        end
        parent.ChildAdded:wait()
    end
end

-- If you find any problems with this script, please message me (Daviidi), and I will try to fix them. :-)

local camdb
local mycamera
local hint = Instance.new("Hint")
local selid = 0
local selected = false
local inuse = false
local currentcam = 1
local newcamera = Instance.new("Camera")
local keycon
showhintid = 0

function ResetCamera()
    if not mycamera then
        return
    end
    mycamera.Parent = workspace
    workspace.CurrentCamera = mycamera
    mycamera.CameraSubject = game.Players.LocalPlayer.Character.Humanoid
    mycamera.CameraType = "Custom"
end

function displayhints(cursel)
    hint.Parent = game.Players.LocalPlayer
    local chid = showhintid + 1
    showhintid = chid
    hint.Text = "Security Cameras ON"
    wait(4)
    if (showhintid ~= chid) then
        hint.Text = "Press Q to start viewing security cameras"
        wait(5)
    end
    if (not selected) or (selid ~= cursel) or (showhintid ~= chid) then
        hint.Parent = nil
    end
end

function SelectCamera(ID)
    currentcam = ID
    if not camdb then
        return
    end
    local thiscam = camdb:GetChildren()[ID]
    if not thiscam then
        return
    end
    local chid = showhintid + 1
    showhintid = chid
    AttachCamera(thiscam)
    hint.Text = "Now Viewing: ".. thiscam.Name.. ", Press Q and E to switch"
    hint.Parent = game.Players.LocalPlayer
end

function AttachCamera(securitycam)
    if not mycamera then
        return
    end
    newcamera.CameraType = 1
    newcamera.Focus = securitycam.CFrame * CFrame.new(Vector3.new(0,0,-0.35001))
    newcamera.CoordinateFrame = securitycam.CFrame * CFrame.new(0,0,-0.35)
    newcamera.Parent = workspace
    workspace.CurrentCamera = newcamera
end

function KeyPress(key)
    if (not inuse) or (not camdb) then
        return
    end
    if (#camdb:GetChildren() < 1) then
        return
    end
    key = string.upper(key)
    if key == "Q" then
        if currentcam == 1 then
            currentcam = #camdb:GetChildren()
        else
            currentcam = currentcam - 1
        end
    elseif key == "E" then
        if currentcam == #camdb:GetChildren() then
            currentcam = 1
        else
            currentcam = currentcam + 1
        end
    else
        return
    end
    SelectCamera(currentcam)
end

script.Parent.Selected:connect(function(mouse)
    mycamera = workspace.CurrentCamera
    selected = true
    local cursel = selid + 1
    selid = cursel
    if not inuse then
        if camdb then
            if #camdb:GetChildren() > 0 then
                inuse = true
                keycon = mouse.KeyDown:connect(KeyPress)
                SelectCamera(currentcam)
            else
                local chid = showhintid + 1
                showhintid = chid
                hint.Text = "Could not find any security cameras"
                hint.Parent = game.Players.LocalPlayer
                wait(4)
                if (showhintid == chid) then
                    hint.Parent = nil
                end
            end
        else
            local chid = showhintid + 1
            showhintid = chid
            hint.Text = "Could not find any security cameras"
            hint.Parent = game.Players.LocalPlayer
            wait(4)
            if (showhintid == chid) then
                hint.Parent = nil
            end
        end
    end
end)

script.Parent.Deselected:connect(function()
    inuse = false
    selected = false
    showhintid = showhintid + 1
    hint.Parent = nil
    if keycon then
        keycon:disconnect()
        keycon = nil
    end
    ResetCamera()
end)

if script.Parent.MustBeInSeat.Value then
    coroutine.resume(coroutine.create(function()
        while true do
            if not game.Players.LocalPlayer.Character.Humanoid.Sit then
                break
            end
            wait()
        end
        inuse = false
        selected = false
        showhintid = showhintid + 1
        hint.Parent = nil
        if keycon then
            keycon:disconnect()
            keycon = nil
        end
        ResetCamera()
        script.Parent:Remove()
    end))
end

camdb = waitForChild(workspace, script.Parent.CameraGroup.Value)