Silver Lake is a good time, but after 2-3 days it can become a bit boring. Keep it short and enjoy it! Always been a fun trip, I go every couple of years.
Nothing really in the area for parks. It's Michigan, Indiana and Missouri that have them. A fairly new one opened up not too far from Silver Lake, so you can hit 2 parks on that trip.
There is also Redbird park in Indiana
'00 Sport. 5-speed, Detroit TrueTrac Dana 44 rear, Detroit TrueTrac front, 4.10's, 2" RE BB, OME shocks, 31" BFG MT, JKS Quicker Disco's, Borla
'99 Z28 M6, some goodies
'94 'Vette, A4 all stock