Picked up 2nd set of oem wheels, now what for autox/DE?

[Toycar2]

Hi all,
First post, but I have read a lot in the forum since picking up my 02 in late December, so thanks!
I do have a modded non-Porsche FWD-ST car, so the Boxster is more for PCA events and a experiencing the RWD mid-engine goodness when I'm not concerned about points.
I put Falken RT615K+ on (F 225/45, R 255/40) on the original twists. Three events and they have held up and the car has done well.

However, I picked up a second set of twists so......

For on course fun what would you do?
- go square with the 8.5's
- mount RE-71RS in size above
- Put some 205/50 on the 7in to run stock for PCA (do they really care and look that closely - I couldn't find any 200tw?)
- ???????