Alright, looks like you were corrected on the D30 vs D35 issue.
If I was you here's how I'd finish up your choices:
- Stay the way you are now while finding and prepping an 8.8 to go under the vehicle. Then buy tires and swap everything all at once.
Two ways to go with that:
1) Find one with 4.10s and gear the D30 to match and run 33s. Not optimal, but it does work and can be down very cheap.
2) Re-gear the 8.8 and the D30 to whatever you want and run whatever tire. More expensive, but better results depending on how you want to do.