Steel Bumper/Winch suspension

Hello, I'm 4 months in on being an owner of a 06' Tacoma sport. When I purchased the truck, it already had a spacer lift of around 2 inches. Being that it has 20" wheels it would rub a little when turning and braking at the same time. I installed the iron cross base bumper and it wasnt bad with just the bumper but once I set the smittybilt 9500 on it she sagged. I'm not really needing to get all crazy with $$$ but I have limited knowledge on suspension. I'm really only looking to go back to the way it was before the added weight. Could I just replace stock shocks and have an added heavier spring? If so approximately how much do you think that would cost? Or would it be better just to go ahead and get something like the OME with 886's?