I think you are going down the wrong path here.
First, you will have issues with the systems fan control as the system expects a sensor internally in the HD (in your case the SSD which doesn't have one). Apple now has a custom HD connector in these newer systems which also makes things tough. You may have problems connecting your SSD to it. You can get an external sensor to trick your system but given the cost and the modifications you would need to make I don't think it's worth it. Sure you can use Fan Control software to override the fans but then you'll wear them out sooner and if your system is getting hot the software doesn't adjust things as well as what Apple has designed from the get go.
Why don't you just get the Apple SSD (or third party offerings) and put it in, keeping the HD. Review the iFixIt SSD guide. While its more work your system will be much better off.
I couldn't live with such little storage as the current crop of SSD's offer. I need space! I've almost filled my 2TB drive with vids and music plus all of my work stuff. I don't want off system storage (other than backup). In my case I have a NAS for that in my closet. I have a very clean desk keyboard mouse and my iPad dock.
I think you'll also find overtime you wish you left the HD in...
As to the tape you don't need any clamps. You do want a heat gun or hair dryer to heat the glass to soften the adhesive to make a better bond after you have put the new tape down or even reuse the tape if its still good.