Help With Simple Script for Round Robin Casting Reset?

I'm using HotKeyNet and trying to set up a castsequence script for my Mage's Frost Nova. The script below works fine for cycling through their casts, but what I need is a way to make the sequence reset after a short window of time. Otherwise, I might have to spam the hotkey to cycle back around to my main character's window which is slow and awkward.

Is there a way to have the script reset to the fist toggle in the chain after a set amount of time?

Code:

---

<Hotkey q>
    <Toggle>
    <SendLabel w5>
        <Key q>
    <Toggle>
    <SendLabel w1>
        <Key q>
    <Toggle>
    <SendLabel w2>
        <Key q>
    <Toggle>
    <SendLabel w3>
        <Key q>
    <Toggle>
    <SendLabel w4>
        <Key q>

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