And suggestion Will be apreciated.
:-)
Whether bitcoin mining hardware will be profitable compared to just hold the investment in bitcoins is very dependent on when you will have the hardware in hand and how the increase in difficulty will be over time but most importantly the nearest future, the price per GH you pay and what electricity cost usd/kwh you have and the miners efficiency W/GH is also important, check with a decent calculator like this one for example http://bitcoinwisdom.com/bitcoin/calculator for the hardware's you had in mine.
Investing in scryptcoins is probably hard to say anything about in general, some will probably do well and rise in price and some will go down in price.