I don't think you weight would prevent you having a HB if thats what you wanted. I am sure IMs see women regardless of their weight.

As for limited options with birthing it does depend on your hospital policy. Some hospitals especially the smaller hospitals refer you to larger centres if you BMI is over a certain amount. I only know this as I work at a larger hospital and unfortunately we occassionally deliver women with a larger BMI because their local hospital has transferred them to us because of that reason. Which isn't nice for them as we are 200kms away.

The only other area with women with larger BMI's that can get tricky is inserting an epidural if you choose to want one. Anethetists can have trouble inserting the epidural in effectively or not at all. This however is not common even with women in the larger BMI. I haven't seen an anethetist refuse even in women around the 160kilo mark. I have seen them ask for someone more experienced do it but not flatly refuse to try based on weight.

As for equipment all our equipment is suitable for women up to 180kilos. With the exception of the areoplane who doesn't take women over 100kilos which is ridiculous.

Been obese doesn't automatically count you as been high risk but it will be recorded in your notes as been a complication. It also depends on where the weight lies. Some obese people carry weight all in the top half or the bottom half and this does change how difficult some procedures are or are not. Like inserting an epidural.