You could check out the QWah and ModFilter algorithms as possible replacements for your Wah pedal.
To replace your volume pedal, please note that for any preset you can assign the expression pedal to control the input or output volume of the H9. In H9 Control that feature is under the More menu as shown in this screenshot:
http://ftp.eventide.com/ljdl/www/Support/exp_controls_volume.png
