Using the same tactics as you did means that you should still win the match if, your game shape and their game shape has remained basically the same seeing that you now have home court advantage. However, they may opt for more outside D, so therefor, my thoughts are go for a little more outside D but not too much. Outside box and 1 will give you that extra D without hurting your inside D and rebounding too much. It may not stop their best player, but it will hurt their 3pt% overall. This is just my 2 cents.
Next season, you should experiment with all sorts of different tactic combonations, so that you gain experience in learing how things work. This will help you decide whats needed and how it can help you out in different situations. Experiencing different sorts of things will only improve your game. Also annalysing your opponent before the first and 2nd match helps alot. GS plays an important role in both matches. So you must find out which player(s) improve or get worse. This will become easier to analize over time as you gain that extra experience.
Good luck with your match.