1. The number of positions is fine, professional hedge fund managers often have 30 to 50 stocks in their portfolios
2. BTC should be in the portfolio, perhaps a 25% to 40% weight. This will give you diversification when all the alts are falling
3. Long term positions in this portfolio include Ether, Stratis, Lisk, NEM, Dash, Factom
4. I would consider adding more privacy exposure such as Monero, Zencash, Deep Onion, or Spectrecoin
5. Every good portfolio deserves a few shoot for the moon low market cap high flyers: Linda, 1337, 808, Sumokoin, InflationCoin, etc. So people have less flattering names for these coins
Do lots of research before you invest and be ready for big fluctuations, its to be expected these are not sleepy muni bond investments.
You are advicing him to add more altcoins to his portfolio, but his budget is no more than $400 if you count all of the altcoins he has.. So how are you gonna diversify all those altcoins you said? If you mean, 45% of bitcoin then it is $180 of btc, then you have 55% to diversify into those 10 altcoins you said, and the other 10 that he has.
How the f*ck is he gonna diversify $220 into 20 altcoins? $10 each one?