Welcome to healthcare magic,
You might be suffering from hidradenitis suppurativa
. Why don't you try medical line of management first before going for such an extensive surgery.
You need to take course of antibiotics during the acute abscess stage.
Apply antibiotic cream like mupirocin
thrice a day.
Reduce weight . Do not wear occlusive clothes.
Always use anti perspirants.
An antiseptic soap also will help prevent recurrences.Hair removal
of arm pit by laser also will help to a certain extent.
of fat under the skin has been reported to be beneficial.
Keep the skin graft procedure as last resort.
Hope this helped