Re: newbie set-up hardware for mining crypto-coins only please help!!
5.i know that difficult can change 
)
i know that guarantees can change don't worry)
) i know that guarantees can change don't worry
)The 1 BTC / month you have estimated was based on a spot diff ~ 2.3
Look at the spot difficulty chart the last 3 days:
http://www.coinwarz.com/difficulty-charts/spots-difficulty-chart
Try recalculate your budget