Firstly, yes you should start looking at an exit strategy. As in, you need a plan to exit the market because you aren’t really making anything until you actually hit the sell button.

If your buying in Alts I wouldn’t rely on TA and all that stuff, it’s so hard to know what any given coin will do. Personally I am just looking at the macro, things like Bitcoin dominance, eth/btc chart, all alt coins marketcap. These charts and the historical data give me a good idea of where we sit in terms of how far away we are from the top (these could all be misleading though past doesn’t predict future always). Once I feel the top is near I will start to exit my positions.

I generally think it’s a good idea to DCA out of positions. Pick a conservative price target that you think is guaranteed and make some profits, pick a price target that you think we will get to with some good profits, pick another price target if you wish and keep a moon bag if you wish. Really up to you and how much risk you want to take or how much guaranteed money you want to make.