Oh 8 Tundra New Suspension

Merry Christmas Y'all!!!

Alright, 08 5.7 SR5 Loooooonnngg box, 180K, bone stock. I tow a 7x16 often for work. I also tow a toy hauler for fun.
The other day i was changing out my summer rims and tires to my winter setup and i found my driver's side front spring was broken. right at bottom of the spring where the curl ends. About 3-4 inches worth are missing.
Same suspension it rolled off the lot with. I have no complaints about ride, handling, etc. This broken spring has me scouring the intermess to see if its worth upgrading the entire suspension. Or fix the broken part? I plan on keeping the truck. Uses no oil. I upgraded brakes to powerstop discs, pads, and calipers. Changed out all fluids.
I'm willing to pay for functionality and comfort. Lift and show don't do much for me. too much spent on dirt bikes and other fun!!
so, Im wondering what I'll like and appreciate for:
Towing
Comfort
Longevity
Something I can install myself
Budget is open to function over fashion.
Also the entire list of components I Should consider swapping out while my truck is down. I need it everyday.
Ill need tires too in spring. Any recommendations?

Thanks fellas,
Mike