Be aware that bitcoin can go anywhere the heavy weights want to take it. You could invest in legitimate projects while doing your own research and analysis of the merits of such investment if you want to maximize your profit. Holding 120 btc is better than 100, and 200 would be even better.
Plan carefully, find legitimate partners.
That's like asking to get scammed lol
How many legitimate btc "investments" have there been so far? And how many people got burned, and lost coins in the past that would be worth a fortune at today's prices?
" how many people got burned" - I can answer that one, One, ME
Bad news, but its all too common
Have a read of this and is not even up to date : https://bitcointalksearch.org/topic/list-of-major-bitcoin-heists-thefts-hacks-scams-and-losses-old-83794
Is they're some reason you can't keep them safe yourself at home? On paper or in a safe or sd cards, bank security boxes etc