I would not be all that confident for several reasons, the Dems will try to go backwards and ban specific firearms such as AR's and AK's just as they have done in the past, not thinking confiscation but new sales would be ended, and since it was done once before and fought in the courts it is unlikely that the SC would end any such ban. As for handguns, I can see them also banning future sales of magazines over 10 rounds, it has also been tested in the courts and so far the laws have survived, which again means it would be unlikely to be stopped by the SC. I would also add that they can make background checks more lengthy and add waiting periods before taking possession of a firearm that someone has already purchased and passed the background check process. They are ready pushing for it to be legal to sue firearms manufactures for how a person uses their firearms and that in itself could put some manufactures out of business or force them to deduce their manufacture of specific types of firearms. Lastly they can impose high taxes on ammunition and place limits on how much ammo an individual can buy in a given amount of time.
Personally I am against all those ideas, but I am a Realist when it comes to what can and cannot be actually done and with a Dem controlled Congress and WH I believe that some, if not all, of the above mentioned infringements will be implemented. The only advice I have is buy what you believe you need or want between now and January, good luck with that since many firearms are hard to get as is ammo to go with them, but try anyway, it might take a couple of months to get it, but you probably will eventually get it.