>>431713193 Problems:
1) The best way to maximize DPS early is to get your awakened starter weapon, because they're on the same level as collab weapons while requiring half as many items/levels to get.
2) Getting multiple weapons at once isn't ideal, because not all weapons are meta for time trials and you get collabs more slowly if you levels are spread around on multiple weapons, meaning you get collabs (your highly important damage spike) more slowly.
3)The Solo weapon stamp exists, which gives your base weapon a huge damage buff if you only have 1-3 weapons.