Upgrading suspension for towing

2013 offroad with 110K and needless to say the 3 leaf spring packs are DONE. going to be getting a boat soon in the 4K range. whats an ideal setup to consider when upgrading? what leaf pack and airbags are well proven? should I consider doing anything to the front end? Spend my money!

 

I have airbags but I don't tow much, though I do get my payload up there. They do well, but they stiffen the ride significantly without weight. You have to keep a minimum amount of air in them because they replace your bumpstops. Also, in my unscientific testing, the airbag cradles made no impact on my RTI on my otherwise stock suspension and it rides better without them. I ha e had 750 lbs of shingles in the bed and it felt great with the airbags.