i got a cb baby ball from the local pet store 2 days ago, the girl at the shop said he had eaten twice,first off ill list my setup then ask some questions.

i got
30 gal long aquarium
metal lid
100 watt exoterra lamp and bulb
large exoterra hide and water bowl
1 piece of cork bark
a plastic plant that suctions to the back of the tank
coconut substrate
strip thermometer (i know i need to go get a digital probe)

ok for the questions!

i soaked the coconut substrate in water till it sucked it all up, it really holds alot of water! will this amount of dampness in it hurt my snake? i;e scale rot etc? the substrate is about 3 inches deep, is that too much?

they last fed him on tues 29th of may, should i feed him every tuesday or more frequently?

is the 30 gal long aquarium big enough for him even when he's full grown?

and lastly should i get a heat pad? im kinda worried about the heating etc, the heat lamp has got the hot spot around 80.

Any and all advice and help would be really appreciated, im a novice and i really wanna learn about reptiles