It's not tough. An ari wrench for those rusted strap bolts is kinda nice. The nuts feel like they take forever to finally come off. Make sure you soak em for a while if they've never been off before.
Replace all the gaskets for the fuel level sender and pump.
Get a couple BRASS punches to assist you in getting the locking retainers off for those two items.
Ebay has some nice deals on tanks if you don't already have one.
That's about all I can think of. It's not a huge job.