Here is a mod list i use. Many QOL. Some are structure/ mod dev things. You can implement these in under an hour with minimal effort, though you said you've modded before so shouldn't be an issue
Advize plant everything- as it says. You can plant berries and many other things, and adjust trees (especially oaks) to drop more seeds. You can also adjust grow times. Pay attention to the units used in the numbers. Some are minutes, some sec.
Craftfromcontainers- you can set a distance, like 100, 200, 400m to pull ingredients for all recipes.
Equipmentandquickslots- gives you a set of inventory spaces for gear. Its useful so every bone fragment or pukeberry you pickup doesnt make you have to readjust
******edit: If you disable or uninstall this you WILL lose the items in the extra slots. This has only happened once to me when valheim updated and i uninstalled my mods to troubleshoot. the problem was self induced and no problems otherwise**
Floatingitems- this makes items which dont normally float, like metal, float on water. This is important because if deer are swimming away or you build a base near water, it would suck to lose your stuff. It also enables single player hunting of a monster which is normally a team effort.
Heightmap unlimited- lets you go beyond normal raising/lowering heights for terrain. Useful for getting yourself killed and for making proper canals and raised castles
Passiveforsakenpowers- as it says. Possible balance issue with this because one of the buffs is a combat buff, but the other noncombat ones are insanely useful.
Speedypaths- this makes stone and and dirt paths give you a speed boost, incentivizing roads for more than aesthetics
Useequipmentinwater- Graydwarf can throw stones at you when they swim, why shouldnt you? Also helps when digging trenches.
Valheimshipexploration- widens ship fog of war scouting radius, takes a minute or two of fiddling with the numbers. When done you can explore and outline islands without dodging shallows and rocks pretty much as far as you can see.
Epicloot by randyknapp--387: makes equipment have additional effects. Possible balance issues, i only tried it briefly but if you want more incentive to slay the hordes of the tenth world maybe it will help you. I disabled it with no issues to my saves when i stopped using it
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Structure/needed dev mods
Configuration manager
bepinex-
Jotunn
Valheimdisplaybepinexinfo
"hookgen"?- i dont remember, it might be needed for heightmap

As always try to read authors' descriptions and backup things, but you know this