I don't guess its a BAD setup.... Although you may want to consider the price of EVERYTHING you need...
No-Solder mod- $25-$30
Gameshark 2 -$40-$50
Original game w/high TOC $50
Total: $115-$130
Then look at the price for a Messiah 2 setup:
Messiah 2- $68.00
Install -$60.00
Shipping- $15.00
Total: $143.00
Not a really BIG price difference....
And the no swap chips are SO MUCH SIMPLIER......