First off welcome to
BT, that being said what kind of horde do you want? An assault horde or a shooty horde?
BT can do either and if you have played
BT for a while you can do both at the same time. I dont understand your list though, you know
BT can take heavy weapons with only 5 guys whats the point of taking 10 or 15? you preditors are fine its a popular load out but for the most effective is 3 Vindicators and 6 landspeeders. Also our droppods are useless we dont have the same rules as vanilla marines so they dont come out on first turn

if you are looking for a competitve list for
BT check my posts there are some pretty easy competitve lists for
BT. just please dont take Lazorbacks