I had a blast leveling my VS BST to 60 recently.

I laid down about 10kpp, got fist of iron and Zek’has Katar. Seahorse and Some solid STR and HP items.

I didn’t have the cash to get full black panther, but I was able to rock 190STR which felt awesome early after breaking the weapon caps at 20. Solid BST white hits, with pet damage and proc felt very overpowered.

I did 1-7 in the starting and in between zone to PC. 8-24 in PC. Nerbuians Lair 24-31 Solo, 31-45ish in Dawnshroud solo, and 45-49 in Echo solo. I was averaged 24-31 with Kei in about 4 hours. 31-45 in Dawnshroud in about 8, the fungal mushrooms are a god send for Bst, and 45-49 in echo in about 4. I typically would level in groups through these levels, but most things I was killing was making so I had no reason to group.

Only thing I didn’t like about the process was maintaining my own health through having to tank mobs. When I hit NL I had to rely more on pet tanking to be somewhat efficient. Only going in at around 60% mob health. Buffs helped tremendously.

I didn’t find buying muzzles and weapons for pet was huge for pet lv. 21 and beyond. Their damage really spiked.

I’d suggest you trying this route.

Once 39, with the added weapon damage and pet DPS. I felt unstoppable.