I'd then like to know what the others guitarists have chosen, kept, and why... and maybe also what they would avoid at all costs.
Let me start by telling you that I am saying what I am saying for your benefit. I am not trying to be mean, just honest.
I tend to avoid Behringer (anything) at all costs. It's junk, pure and simple. From the shoddy workmanship, all the way up to the shoddy pots and buttons, pure junk.
For bass I like the US Made Fender precision basses.
For guitar I prefer strats or Gibson les paul.
Unless you plan to play in your bedroom forever you should pick up a 100W guitar amp and a 200W bass amp. The simpler the better. Amps with a bunch of doohickeys on them sound like shit and tend to have problems because of all the additional crap in them. Every additional pot and button is a potential for failure and something to break when humping your gear around.
My personal preference for guitar amp is a marshall half stack or fender twin. For bass it's classic Ampeg or Acoustic or a newer Acoustic. New Ampegs are crap.
Why use modeling when you can just get what they are trying to model? Focus on the music not the whiz bang bullshit all in one DSP gear because at the end of the day, all it is is bullshit which will let you down. You can get any bass tone you want out of an Acoustic amp with no pedals. If you must, get a good bass fuzz, compressor, and maybe a chorus stomp boxes. If you are into funk a bass wah is nice.
I guarantee you'll be able to get any sound out of that rig. You can get a 200W Acoustic 15" combo amp for $350 and it will fit in the back seat of your car. It's loud enough to play any small to medium sized venue and will keep up with a guitar player playing a 100W half stack.
But don't take my word for it, go to the music store and try one. If you end up buying one, get casters with it so the thing is easier to move around. It weighs around 75lbs.
Guitar pedals are a matter of personal preference, but try to stay away from all in one DSP gear.
There are a lot of famous stomp boxes out there that are REALLY good at what they do. By getting some bullshit DSP that does it all, you are getting half assed versions of these. Again, go for the real thing, not "modeling".
Just my opinion tho... Imitation gear == imitation sound and it's not all that much more expensive to just get the real deal, especially since if you buy junk you'll end up replacing it a lot.
I'd start by putting most of what you have on eBay. Keep the '72 strat reissue. Sell the Washburn before the neck warps (which will happen). Get a new bass and a nice pair of amps, and go from there. Start with the foundation... with a real amp you'll find you don't need a "sustain" pedal, or anything else related to sustain. The whole purpose of a pedal like this, is to give you something that comes naturally with a real amp.