Need some modelling and rigging help

modelled rough outline of character by refrencing anatomy pictures, then stole hands from an asset.
used the metarig as a base, though weight paint on the hands are undesireable which then had to be repaint.

Need veteran guidance on workflow!
refrence photos attatched also in Gdrive, i intend to keep the hands floating.

https://drive.google.com/drive/folders/19iwvSk2_yGpca7pmys-NOxMVRY8Wc5q9?usp=sharing

You might first make the rig match more the proportions (pelvis) of your model and then also position it “over” your model… like so (simple moved ~6 units in Y an re-skinned with automatic weights):