PDX-(AS)-LAX-(DL)-JFK-(SV)-JED-(SV)-DAC, Is this valid award route?

With help from this forum, now I can search for low tier PDX-DAC(Dhaka, Bangladesh) R/T tickets with a stopover in JED (Jeddah). I looked for each segment and low tier seats are available. I am planning for Aug 2014.

Now is this a valid route for South East Asia from US?

PDX-(Alaska)-LAX-(Delta)-JFK-(Saudia)-JED-(Saudia)-DAC R/T. I want to get this ticket for 80K miles. PDX-JFK could be through LAX/SEA/LAS etc.

I want to get the experts opinion here. I am afraid if I ask DL agent, w/o knowing they might say not valid. If the experts opinion is a valid route, I can work with the agents.

Thanks in avdance.