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Hi Again
A 32mm eyepiece will give you 28X magnification, good for wider angle views of nebula and clusters. For close up lunar and planetary the 5mm should work well at 182X, which is reaching the normal limits of what your scope is capable of in anything but perfect seeing conditions.
For most types of astrophotography an EQ mount is a must and for your sized scope something in the EQ5 range would be a starting place. Be aware that your scope will introduce cromatic abberations, sometimes referred to as false colour, to your images, you may have noticed when looking at bright objects like the moon, that there is a blue fringe to the bright limb and the camera will exagerate that unless your are shooting in mono. An minus violet type filter will help alleviate the false colour to a moderate extent.
To get the planets in a decent image scale F ratios of F15 or more is needed, your 2X barlow will give you F20 which is fine but at an aperture of 90mm the image will be dimmed. What type of camera are you planning to use would be helpful to know. Also shooting the planets at lower F ratios will result in the planets disc being tiny, although brighter and that is for the larger targets of Jupiter and Saturn.
Hope this is of some help.
Cheers
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