Roger,
Welcome to the club!
I don't have a checklist. You asked for suggestions, so I assume you may be new to having an Onan. My suggestions are left over from a dry camping seminar provided by Monaco and Onan several years ago. Seminars like that would take an hour or so, but I'll try to give you the high points in a few paragraphs.
Onans love to be run and hate to be unused. Even when you are not dry camping, find excuses to run it frequently with a load on it. Once a month for a half hour is minimum. An easy way to create a load is to put one A/C on cool and the other on heat pump. The reasoning is that the brushes and other electrical components need use to stay healthy. It helps the fuel system too.
To help your batteries last as long as possible, try to run them in the top 30% of their capacity. Avoid the bottom 30%. That is hard to measure, but the inverter/charge controllers can be set to help. It can be programmed to quit inverting at a relatively high battery voltage. The various ways to measure state of charge electronically don't work perfectly, unless you remove the battery from the system and have it "at rest".
My experience is with wet cells and you have AGMs. Be sure you have your inverter/charger set for that.
Batteries do not charge quickly. They are even slower in the top 10%. My goal is to aim for charging to start at about 60% and stop at about 90%. If I leave the genset on longer, nothing is hurt. Generally, I seem to run the generator around 90 minutes in the morning and another 90 minutes at night. If the microwave is needed for more than a few seconds or a hair dryer is needed, I'll start the genset.
There are only two mistakes than can cost money. One is not running the genset often enough. The other is to leave dry camping with discharged batteries. The engine alternator will do it's best to charge them. It was made to charge a couple chassis batteries on truck after a brief draw for starting. Add four deep cycle batteries in a state of discharge and the alternator will overheat and have early failure from over work.
If you camp near others, or find diesel exhaust unpleasant yourself, consider buying Gen-Turi. Camping World and Amazon have them. On Amazon there are some pictures and even a video. (
http://www.amazon.com/Camco-44461-Gen-Turi-Generator-Exhaust/dp/B000BUU5XG/ref=sr_1_1?s=automotive&ie=UTF8&qid=1402497718&sr=1-1&keywords=gen+turi). Many brands send exhaust out the back. Some even send it skyward. A Beaver design flaw is that the genset exhaust points directly at your neighbor's front door in typical row parking while dry camping. A Gen-Turi fixes that.
If you have questions, post them here or phone.