I never installed one or had one but when I had a garage people got towed in with a no start problem and stated they were installing a system. I told them we didn't do them to go to an alarm shop. They said to get it running normally at that time they burnt a fuseable link and maybe some other wires. Since bulldog has wiring harness for their units I recommend them.
I'm sure you know how to wire them up or you wouldn't be in the business. Will a Bulldog wiring harness work for your suggested units. This is my only problem with your companies. I looked at the link but didn't observe any.