Hi Kevin. I've done a little work on the 1st request. The others will take a longer, but hang on in there.
I'm not sure if you use 'Rapid Re-sizer', but that's probably your best option for getting the size that you want. I've tried saving the images to you're sizes but it won't for some reason. For the main image, just take out the corners of the border, and insert the filigree corners of your choice - I've attached 2, but if you want any more just let me know. (Print 4 of them and add to your pattern as you wish). Any other help, give me a shout. I will work on your other requests over the next day or so.
Hope this helps,
Kindest Regards,
Nick.