Unfortunately, scholarships for MAcc (MS Accounting) programs aren't as common (compared to other graduate level programs) because;
1) 5th year MS program is required for all CPA pursuing accounting students
2) Program is short - usually 1 to 1.5 yrs to complete
3) Program itself isn't as lucrative for schools themselves as law, medical or business graduate programs
However, you should be able to find scholarships to help your studies if you look for them early on.
You've mentioned that your school offers half tuition for the master's program, plus possibility of TA position. Keep that option open.
If you were a non-accounting business major, you could have taken advantage of programs such as Ernst & Young's "Your Master Plan" to finance MS Accounting degree.
(
https://www.ey.com/global/content.nsf/US/_Careers_-_Student_-_Student_programs_-_Your_Master_Plan)
There are private accounting scholarships available:
(
https://www.accountingmajors.com/accountingmajors/scholarships/)
Also, you have a stellar stats. Consider, nearby public universities with MS programs. They are usually cheaper.
Otherwise, you should also consider for MBA programs specifically designed for current college students - such as Harvard's 2+2 - program. The trend is - business schools are trying to attract top undergrads directly into their MBA programs (or with 2 yr experience but guaranteed spot)...
1) Your GMAT, GPA, and other background is simply outstanding
2) One of the reason why bschools are looking to attract younger students is because they want to attract more female applicants.