Hey Macc,
So sorry to hear of your situation.
A doll can fill a void, but they can only do that if you fill them with love first.
Weight is an important factor, more so if you intend to move them about regularly. I have a girl who is 43KG and even with years of experience and no major medical conditions to hamper me, a day of shooting photos with her leaves me aching.
I actually had the pleasure of a
Starpery 165 staying for a week. She was 50KG as a full silicone girl, and was a real armful to move about due to her weight and physical proportions. Amazing to cuddle up to though!
If you intend to get her in to bed and leave her there it becomes less of an issue, but bear in mind she will need cleaning and care which involves moving her about to some degree.
HTH
Welcome again
K