those are 100% guaranteed to come right back as you re stock new frags, because nobody has frags free of those hitchers unless you buy very very select corals produced in clean systems, so rare I'm not sure what business provides that option. no pet store can.
vermitids are 100% guaranteed to come right back, can't be avoided, deal with the current ones.
same with algae, your reefing environment selects for it as the tank sits. that part isn't changing with new rocks/dinos are likely in your current plan
you won't have a practiced internal means of controlling algae or any invasion with this plan, you should fix your current reef and keep the microorganism base that you've earned on live rocks preventing you from getting dinos that lasts 8 months straight.
aiptasia has a way to be controlled right now on the current rocks/surgical ablation not gluing not boiling not any animal...refusal to apply that control method simply means once they get in again/same takeover. a do over cannot help, it's crucial to fix your issues as they sit now because your stocking sources aren't changing and your internal control methods aren't changing-u need to apply known internal controls for those annoyances. Verms don't count, you're getting those no matter what.