You will need to get HDMI over cat-5 extenders of some quality.

HD-Base-T is a very solid standard which will allow you to send HDMI over 300 feet without issue. Monoprice has some units which I regularly use which are very solid and are reasonably priced.

You will still need splitters and anything else you may need to get it to work, but you can definitely send HDMI signals that far without problem.

I send my PS3 50' over a HDMI HD-Base-T extender, then another 50' over a standard HDMI cable to my display. It handles 3D at that distance just fine. So, for the long run, use the extender, then for the shorter run (35') use a standard HDMI cable after the splitter.

If you have a follow up question, just ask.

HDMI extenders come in a number of versions.

There are some which just use traditional HDMI cabling, but this is a very poor way to do things as HDMI cable is expensive and more likely to have failures over long distances.

There are dual cat-5 extenders which use two pieces of cat-5 cabling and have one box on each end of the cat-5. One has the HDMI input on it, the other has the HDMI output. These are good for standard video up to about 1080i if they are powered, but typically don't properly work with a PC and don't usually handle higher resolutions.

The new awesome is HD-Base-T. These boxes are similar to the dual cat-5 units in that you have a transmitter and a receiver. The transmitter will have a HDMI connection and may ALSO have a Ethernet jack, IR control, and/or RS-232 control connection. The transmitter is connected to the receiver over a single piece of cat-5/6 cabling at distances up to about 300 feet. The receiver has a HDMI output and may have Ethernet and control outputs to match the inputs.

There are very expensive versions costing upwards of $600 a set, but I have tested these from Monoprice and they have worked well for 1080p/3D material and PC connectivity with proper EDID support.

http://www.monoprice.com/products/product.asp?c_id=109&cp_id=10110&cs_id=1011012&p_id=8122&seq=1&format=2

or

http://www.monoprice.com/products/product.asp?c_id=109&cp_id=10110&cs_id=1011012&p_id=8123&seq=1&format=2