To start,
1. Where do you buy your bitcoin from
2. What exchanges do you use
3. When you buy alt coins and profit, do you convert back to btc? Because what if your profit from alt coins and convert it to bitcoins but bitcoins is low, doesn't that defeat your alt coin profit?
4. Do you convert from bitcoin to usd to withdraw? If so where do you withdraw and which method do you use.
Oh and this sounds like fees over fees.
First you buy bitcoins for fee. Then transfer them to a exchange for a fee. Then trading on that exchange is a fee. Then transferring it another place to withdraw, then the actual withdraw fee.
1. I buy BTC from local exchanges that allow instant buying using net banking directly.
2. Prominently Bittrex is my favourite due to its speed and reliability. Others are HitBTC, Cryptopia, Nova and sometimes Livecoin.
3. I never invest my bought BTC in altcoins, I always use earned BTC for altcoin trading so for me Altcoin/BTC is determining market, not Altcoin/USD. I never sell any coin lower than what I bought in BTC as that defeat my purpose of trading if I get negative return.
4. According to need I withdraw BTC to bank quite often but in local currency not USD again using local exchange as stated above.
The fees scenario depends upon how big you investing. If you are investing $40-50 ($10-20 in fees is horrible) but if you are large trader and work in grands then fees is least of concerning matter.