A 20A circuit can provide up to 2400W. The total connected electrical load would be 2150W (assuming 185W for the RPTV, 20W for the VCR and DVD each, 50W each for the two Dish receivers, 425W for the Model 1050, and 1400W for the LFM-1). In reality, the LFM-1 will rarely draw 1400W even for a moment, and in general the RMS output rating of the amp (325W), which puts the real load somewhere reasonably below 1800W (or 15A at 120V). The MAX5100 is rated for 1800W, and I suspect the Monster 3500 is similarly rated since that allows the unit to be connected to a dedicated 15A circuit and offer the full resources of that circuit to the downstream load. I wouldn't feel bad about connecting everything to the 5100 (probably with the LFM-1 and 1050 on the two high current outlets). If you were worried about it, you could provide separate surge protection for the LFM-1 and put everything else on the 5100 or 3500 and still have capacity to spare in both the power conditioner and the 20A circuit.