Amplifier for Remote Operation

Hello, I will be looking to purchase an Amplifier for Remote (WAN) use. My setup currently is a 6600 / ATU. I operate AM and currently use a 20W carrier with good modulation. I operate remote 95% of the time. For the client side, I use SmartSDR for MAC, which I prefer over the Windows version. My audio chain is the following:

Presonus PD-70 Dynamic Microphone => MOTU M2 Audio interface => MacBook 14 Pro M1 (with Loopback Audio) => DAW w/ Graphic EQ, Compressor, and Limiter => SmartSDR for Mac => RF Antennas: 75M dipole up 80ft, 40-10 OCF dipole up 70ft. Resonant Antennas. Audio Reports on AM are excellent with low cut of 50 and high cut of 5000.

I would like to get an amplifier that runs on 110 VAC. I am only looking to run 400W PEP with an AM carrier of 100W. I think the KPA-500 and PG-XL would fit the bill, but there may be other amplifiers to consider. I don't have the capability for 220 VAC. The key would be complete control of the amplifier over the internet via IP address from the MacBook. PG-XL is fully integrated with SmartSDR for Mac, but the cost may be too high. KPA-500 is also a bit expensive as well. In both cases, I would have to hard limit the power output to less than 500W (or 10 amps max on the 110 VAC circuit in the wall. (don't want to over heat the wire in the wall when not on premise) Any suggestions foran Amplifier for this use case that is easily remote able? Thanks! dan wa1qzx