The problem I have is that you can't, conceptually, take another action while moving (unless I missed that in rules - it has been a few years) and that and it doesn't account for reactions. Personally I would go with 6 actions and include reactions and give some free movement. So you have a set amount for free movement, but then you can add on top it if you spend an action. Also, a reaction would cost an action too.PF2 bring this close to perfection. Want to move 3 times? Sure! Want to Move, Jump and Attack! Go for it! Spell and Sword? Why not? 3 attacks? Of course you can.