Need opinions on gear change.

Right now I have a 4:56 SG in my 4 speed, 68 FB Fish, with an 11:1 340, ported T/A heads, hughes solid cam 245/250@050, 560/575 lift and Eddy street tunnelram with vac. secondary 600 holleys. My problem is I now have 14" rims and 245:60:14 MT Indy Profile S/S tires. Way low geared I know. With money being tight, it will be awhile before I can afford 15" rims/275:60:15 soft tires and either S/S or Caltrac springs to keep the car up off the tires. I am thinking of going to a 3:91 rear gear, Will I still be okay with initial leave with 3:91's? The eddy TR works good right now and I don't anticipate much problem with the taller gear. Anyone have this combo before?

Lastly the Centerforce DF setup is awesome! This thing locksup and now have a real traction issue with the soft compound mickeys! Actually have scared myself once or twice.