Looking for wordpress freelancer ..

i need to implement few changes in my wordpress site.

– Users should not see the normal admin page, instead they should be able to only insert post from another page (with adding the custom fields in form controls [drop down list, radio button ..etc).

– They should be able to modify the posts they insert.

– Users should be able to upload images to others posts …

Can someone help me on this? i’ll pay for this ..