To the second question. I'd say you should ask Support directly and see if they could do it. So long as you own both accounts, I dont see why they couldnt or wouldnt do it.
To the first. You could do it in any number of ways. You could actually create your own script using PHP and cURL (my preferred method) to login to the panel and pull the data listed. The second way that comes to mind is a few programs that monitor for you. If your on a PS, as I suspect you are, you could monitor speeds with any number of programs, http://www.kernel.org/bwbar.html is my favorite but might not work right on a PS. It might even show a whole server utilization. I'd say in the email to support, you ask about this as well. Most of the support crew will try to help you a bit, and may even recommend a program or two.
Load times, as in page load times? I'd say the easiest way is a simple addon to your existing scripts that checks script execution times. then pop the end result into a table and go from there. The downfall i see to this is the massive number of rows involved as each page load would do its own row. you could solve that by making 2 tables, one for a 24hr period that keeps the data for 24hrs so you can get individual stats (having a cron delete older then 24hr stats every hour or 2). the second table can be one massive int and another int (first is total time of all execution, update set extime = extime + $new) and the second if total execs (exs = exs +1). then you can just do basic math to get the overall page load times for your site.
personally, I like to run scripts to test site speeds somewhere else, on another server. but thats actual speed. not page load times or server loads or even current utilization. just plain old 10mb file takes .5s to download, etc etc.
I'll try and answer whatever questions you have. I'm sort of asleep right now as I'm on 4 hours of sleep in the past 2 days, so i'm on fumes.