I must of been looking at a different sub and got mixed up. Looking at so many things right now haha.
I'm thinking of going the double sub route. Front left and right setup. After Jester recommended and watching more video tutorials/reviews etc. So x2 SB1000 Pro's should be more then ample for my room but to put things in to context.... You've got to remember I'm coming from using a 5.1 12 year old panasonic special from currys. The difference my ears are going to experience will be out of this world! Even if this setup may be considered to be "entryish" level for the more experienced av system home cinema users/buyers.
You can do that with the PB too. Only thing you need is tad more space (see width and depth), if there isn´t space then by all means stick with two SB1000 Pros. I know you are coming from toy system, but also keep in mind that the PB variant won´t really cost much more and it would be different experience as it will outperform the SB2000 Pro easily too with more tactile impact and for deep bass range you need ~2,5x SB2000 Pros to match it, one costs 1k£. This is just to show you how much the large cabinet matters. I hope you aren´t being scared to buy better cause you will do that otherwise later as this hobby will do strange things to your head..
For reference member has two PB16 Ultras (3000£/ each) in exactly similar sized 5x4 room so two PB1000 Pros won´t be too much if you are thinking of that!