No ill effects that I have noted. I've had the car for a little over a year, and about 1000 miles. Like you said, the stance is pretty good, but remember my car is on lowering springs too, so it would look different with stock springs. Regarding ride and handling, I think both are very good, but I never had the car in its stock form, so I'm probably not much help on that matter. I get an occasional rub on unexpected bumps. It's very infrequent, and doesn't seem to be causing any wear on the tire, fender, or plastic fender liners.
The amount of poke is a matter of personal taste. I'd prefer it if the back wheels were in about 10 mm, but it does look good as is. The front fenders have more room, so the stock 8" wheels on the 25mm spacers seems like a perfect fit to me. REMEMBER, if you go with wider wheels, you must change the offset correspondingly. For example, 8.5" rims at the same offset as the stock 8" rims will stick out (and in) 1/4" further.
Because I can't leave good enough alone, I just purchased a set of BC Racing coil-overs (and exhaust and big brake kit). The plan is to drop it down a little lower on the BC's without the spacers, and then measure for what I think is the perfect offset and wheel width for the lowered stance. The spacers and lowering springs will go up on the classifieds section of the forum. It's definitely a cool setup for not much money.