Modification of the site on Yii2

It is necessary to perform a number of works to finalize the site on Yii2
www.remcraft.ru website
The main tasks at the moment:
0 - completely rearrange the admin panel of the site (if your team has a dialer, you can give him the task of designing the admin panel)
1 – acceleration of the site
2 – correction of a number of errors in the layout
3 – some functions of the site do not work (tracing paper, menu)
4 – making adjustments to the work of the site (creation of two new modules)
5 – Optimizing Photo Uploads
6 – redesign of several galleries

Below is a photo of what the admin panel looks like

From you the cost is approximate, you can cost an hour of work, as well as your experience on Yii2

The main problem is that the site was not done in the best way, a lot of crutches, I would like to get rid of them.