Based on your responses, I'd say you don't need any weight usually, and sometimes might need a little bit of weight, so I'd just go with trim pockets and put them on your tank straps. Ditchable weights shouldn't really be needed if you're diving warmer waters with proper weighting.
u/supergeeky_1, u/iolllloi
FYI, these pockets are great trim pockets for a lot less money than most other similar setups. I use them on my tank bands to trim out. If concerned about buoyancy at the surface, you could put a pair where you could reach them to remove weight as well.
Also, be aware that you'll likely need less weight when you go from a bulky, buoyant jacked BCD to a nice BP/W with single-web harness as the "fluff" that is buoyant in the BCD goes away.
With Palantic Trim Weight Pockets
Then put pockets on your thighs (wetsuit, drysuit, or pockets on their own depending on your exposure protection level) to store anything you need/want that you can't secure on the harness.
BP/W are really simple, and once you assemble them the first time, you rarely need to do anything with them if you don't feel like it. However, they can be easy to "change" into something new in a matter of minutes.
The basics of everything start with the backplate. This is what your harness (what goes around your body to hold everything to you) is attached to, and the backplate is also what you attach "everything else" to to make your own 'BCD' (remember, a BP/W is actually a type of BCD). When diving singles, you'll generally want a single tank adapter behind the backplate and your wing sandwiched between the two.
If you were my buddy, diving out where you are in thick wetsuits, I'd recommend you grab a DGX single tank wing/harness assembly of your liking (probably with at least 30 lbs of lift, and with the SS backplate), a single tank adapter(just makes the tank stay in place better in my experience), and one or two sets of trim weight pockets to put on your tank cam bands (in general, unless you need more than 26 lbs of weight total, I wouldn't bother with the expense of a weighted single tank adapter. I have one but only because it came with a used BP I picked up once).
If you later decide you'd like to travel with it for tropical destination diving, you can swap out the steel backplate for an aluminum one to avoid being over-weighted in the water and to keep down on weight in your luggage.
If you later decide to dive doubles, you simply swap out the wing for a different wing and bolt the bp/wing directly to the doubles. Takes about 5 minutes. Easy peasy.