help!!!!

i need a new flute- im 15 years old and about grade 7 and i want to become a flute teacher. im thinkin of a solid silver flute with a platinum riser.

i would also consider just gettin a solid silver headjoint with platinum riser for my old yamaha 211. would this make a great difference?

where could i get these at the cheapest price?
what make is best? (im considering altus)