The Mode7 thing doesn't look that good on SmileBASIC due to limitations on proccesing and how the algoritms are built. Mode7 looked good back on the SNES times because it had specific hardware for such task, we don't have the equivalent on SmileBASIC, so the only thing we have is just raw algoritm that takes too much proccesing power. I would recommend it only if you have a N3DS.