Diy advice needed some info too.
 

Ok y'all I need some advice and some info. Might be long winded here but giving all the info I think y'all should know ..2006 Vue 3.5l . History on it .. purchased for 500$ from an old ex coworker caz it was "eating batteries" as he told me and he just wanted to get rid of it. .. turned out was the alternator (which I told him even before I bought it but he sold it to me anyway) which I replaced rather easily. .and brakes (pads both front and back (shoes )and just little odds and ends also had some interior stuff replaced also. (Thru out the couple of years I've had it now). After about 6 months with it the ac went out then went out again but I figured out it was the other compressor I bought from junkyard. Ended up getting a new one off eBay also new condenser, dryer (receiver), expansion valve, and low pressure line (rock auto). Evacuated system all Good and worked great for a year or so til this year when summer came and went to use ac. Nothing no cold air nada zip zero. Couldn't find the source of the "leak" til I put in some "leak stop and one can of 134, well turned out it was the dryer where the metal attached to the hose (couldn't see the dye spot until I removed the headlight and the spot was on the underside but the leak stop was making it bubble just a tiny bit and I mean tiny little blip of a bubble) . Ordered another dryer (Amazon this time) . But also notice the rad was seeping just a lil tiny bit around both tranny line connections and it looks kinda rusty. Then my stupid low coolant light would bounce on and off ..filled it up and now just stays on. Next thing ya know it's jumping up to red line temperature wise I'm like **** so got a radiator and thermostat. (Keep in mind I haven't installed them yet). Then last week while I'm waiting on the parts to come in I noticed some water by the passenger side tire. So I said **** it's the water pump now. Ordered the timing belt water pump kit. (Waiting on that to come in). So at this point I'm just really looking for advice on doing it all at once. And a few questions... (Btw I'll add pictures as I go may even make a few short videos)

A/c wise since I put that leak stop in should I use the a/c flush chem or can I use mineral spirits to clean out the EVAP core , expansion valve, lines, and condenser??
I do know I should at least run the flush thru (yes I know not the compressor) but just wondering if it's ok to use mineral spirits as was seen on another post somewhere. (Think it was at saturnfans.com)

Water pump timing belt wise... Anything I should be aware of that might make it take longer than expected?
also can't seem to find a definitive answer on how much coolant I will need for all of it (I'm gonna flush heater core etc. ) I have two gallons of concentrate and two gallons distilled water. I thought I read somewhere it took 6 gallons but other places are saying one gallon concentrate and one gallon water. So how much will I actually need??


Also was thinking of changing the rear drums to disc (maybe but need a lot more info on doing that)
Like if I have to change out to a 08-10 rear hub etc. (Seen a video on that on YouTube. Any advice on this too.
??