Rim / tire mod on the cheap?

[ashtray]

So, I have no budget for this, so I may end up doing nothing, but here's the situation:

'03 WRX running 7 spoke '06 WRX 17" rims, silver, with 225/45 S-Drives
'13 BRZ running stock.

I'm actually happy with the way my wagon looks, though the ability to swap rims between them has peaked my interest.

Options:
Swap full sets. (Free)
Swap only tires! ($100 in shop fees?)
Buy new sticky tires for BRZ. ($700)
Buy new rims for BRZ, use stock tires. ($900)
Buy new rims for BRZ, use WRX S-Drives, put Primacys on WRX. ($1k)
Plastidip stock BRZ rims. ($50)
New sticky tires on BRZ, then plastidip rims ($750)
Buy used set of WRX or Legacy rims w/ tires ($500) Plastidip if bored.
Play around with photoshop, grab a beer, watch some TV, forget the whole thing. ($5)

The '03 WRX might get replaced at some point next year - maybe with '15 WRX, or something else. I do like the idea of having 3 sets of rims so I can swap, plastidip, etc on a whim. (ie, always having a spare set)

[Asphalt~86]