avalon rose, since everything is being redone, it would be silly to leave those low, builder grade vanities. do you have the 90's oak vanity that comes to your thigh and topped w/cultured marble?
spend the extra money to update it completely. you'll be so glad you did a year from now. Does insurance give you no credit for materials like tile?
here's a longer vanity. no way would I spend 1500 for a countertop and put it on your 25 year old, thigh high oak vanity! lol.
Wouldn't this look so much better in your space?
beg, borrow or steal if you have to, but do everything at once. You're already getting a break from the insurance company, so look at it like, "redoing the bathroom for half-price".
that being said, look on craigslist. You can find some great deals on vanities, and granite or remnant stone pieces.
what state are you in? ever hear of pre-fab countertops? you can find a 6' x 22" finished countertop for about $250. get two of them and have a seam. My fabricator would do something like yours for about 800 or so. (install, cut sink holes, seam, edging, etc). go to a stone yard and see what they have
But, for your space, I'd prob do a 72" vanity (you can find one just like this on craigslist for :
$700 this entire piece, new, 700
or two of these 48" vanities, comes w/marble top and sink, $900. these is all solid wood, no particle board. (resembles RH) you could put a little make-up area in the middle of these two.
you could also stick a tower or linen closet type of storage unit at one end to eat up some of that space if you do a 72" vanity
or, a make up area in the middle
standard height now for vanities is about 36". doing something like this looks so much better than your current one, and you have plenty of counter space.
94", 2800
https://www.bathvanityexperts.com/james-martin-de-soto-825-v94-sl-94-inch-silver-gray-transitional-double-bathroom-vanity.html
it would be helpful if you posted a picture of the space. you may get some better ideas.
Q
Storage idea.
Q