I will just advise that in that circumstance, you’ll likely end up replaying the whole game if you grab the DLC later. Both muscle-and-regular memories will have faded by that time that late-game will be challenging to come back to even jf you’ve spec’d to be OP at the time. Not saying there’s anything wrong with replaying, only making sure you know to expect to.
I played the game just after launch and did a modded replay in prep for Phantom Liberty but it took so long for some of the mods I now deem important to get updated that I ended up deciding to replay yet again.