If 19 is your central LNB 45ºE (at 26º off centre) might be just about do-able with the modified guide bar if you're lucky. Going the other way you can forget anything past 5ºW, at least for the time being. You can try for 26ºE but I think you will be wasting your time. Everyone says at least a 1 metre dish is needed even for powerful signals from Badr4. That leaves you 45.0E, 42.0E, 39.0E, 36.0E, 28E, 23.5E, 19E, 16E, 13E, 10/9E, 7E, 4.8E, 0.8W, 4/5W, 14 satellites in total. That's 2 spare ports on the switch. You could set up a motorised dish on one of them to deal with the bits of the arc not covered by the T90, or where it is too small for good reception.
Not that the scale goes to 30 of course. When I had my T90 set up facing due South (0º central) I could pick up 30ºW which is a 54dB satellite (45cm dish). This is so far out of the guide bar though that I wouldn't bother except for a really powerful satellite that can be received on a mini dish.