If you can get the other 2 lines to the dish outside just buy a 3x4 multiswitch, and a 3x8 multiswitch. That will give you your 12 lines. We have used Eagle Aspen, JVI, the Eagle Aspen's look cheap but I've never been to a service call on one yet. The JVI is what we commonly use it's a bit more sturdy. The 3x4 should cost less than $20.00 the 3x8 around $50.00. Those prices are at any wholesaler. If you buy retail they will cost about $50.00 for the 3x4 and $110.00 for the 3X8