wheel size question

[VancouverZ34]

Hey guys, I just sold my 19 inch G2's wrapped in RE-11's.
Now I'm looking to get a new set of 18 inch wheels geared more towards tracking.
I was initially thinking about 18 x 10 +20 all around and wrap in 265/35/18 tires.
However, i figured out that the face on TE37's are distinct.
Rears have more concave look, while fronts sit more straight(?).
So it got me thinking if I should just stick with 18 x 9.5 and 18 x 10.5.
But it's really difficult to turn around because of all the benefits of going same size all around.
Benefits of having all same size are:
(1) enables cross rotation of tires : saves me some $$$
(2) better time : track here where I live has few tight turns that needs to slide the car a little bit. So makes car slightly more tail happy when needed.

However, downside of having all same sizes are:
(1) look : concave all around might look weird.
(2) resale issue : since 9.5 and 10.5 is most popular size, it might be harder to sell.

I will be participating few amateur trackdays each year and I'm not thinking about getting extra set of rims and slicks since I'm a novice driver.
Also, I'm not going to get 19's due to weight, price, tire price.

Please give me some ideas.

Thanks