1. Create an intranet for collaboration. There are numerous open source projects and proprietary products that can make collaborating between tablets very easy. Some allow easy customization to generation tracking or forms systems to allow you to process and share data instead of using spreadsheet or word processing applications.
2. Make sure you have a nice stylus with palm recognition and pressure sensitivity. Adonit's products for iPad, Samsung or Microsoft's own products are great as well.
3. Use Screenleap to share a desktop with several tablets. It has HTML5 support, is pretty cheap (pay as you go) and very well made API if you want to integrate it with your intranet.
4. Stick to open standards. Use established Internet standards like HTML5, PNG or SIP, and not browser-specific features or plugins, WebM or WebRTC.
5. Do not use a program like Evernote or OneNote, when you can just as easily use iOS or Android's built in handwriting systems to just insert text into documents or web-forms.
6. Buy plenty of power chargers.
7. Invest in wireless access points that allow for two gigabit up-links so you can take full advantage of 802.11ac. Max theoretical speed is around 7 Gbits.
8. Do not buy the cell modem version of a tablet unless you are off-site constantly or have a lot of transmissions when off-site. Otherwise, rely on smartphone data sharing, shared mobile hotspot devices or local wireless.
9. Make sure any design/paint/doodling app you decide to standardize on has versioning built-in so you can easily undo mistakes, because you will be making a lot of mistakes.
10. Recognize that the first six months will most likely be frustrating, but by month five you will be working as fast as paper and after month six you will be saving time.